Detailed structural analysis of the rim of a large, complex impact crater: Bosumtwi Crater, Ghana

Research Article| June 01, 1998 Detailed structural analysis of the rim of a large, complex impact crater: Bosumtwi Crater, Ghana Wolf U. Reimold; Wolf U. Reimold 1Department of Geology, University of the Witwatersrand, Private Bag 3, P.O. Wits 2050, Johannesburg, South Africa Search for other works by this author on: GSW Google Scholar Dion Brandt; Dion Brandt 1Department of Geology, University of the Witwatersrand, Private Bag 3, P.O. Wits 2050, Johannesburg, South Africa Search for other works by this author on: GSW Google Scholar Christian Koeberl Christian Koeberl 2Institute of Geochemistry, University of Vienna, Althanstr. 14, A-1090 Vienna, Austria Search for other works by this author on: GSW Google Scholar Author and Article Information Wolf U. Reimold 1Department of Geology, University of the Witwatersrand, Private Bag 3, P.O. Wits 2050, Johannesburg, South Africa Dion Brandt 1Department of Geology, University of the Witwatersrand, Private Bag 3, P.O. Wits 2050, Johannesburg, South Africa Christian Koeberl 2Institute of Geochemistry, University of Vienna, Althanstr. 14, A-1090 Vienna, Austria Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1998) 26 (6): 543–546. https://doi.org/10.1130/0091-7613(1998)026<0543:DSAOTR>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Wolf U. Reimold, Dion Brandt, Christian Koeberl; Detailed structural analysis of the rim of a large, complex impact crater: Bosumtwi Crater, Ghana. Geology 1998;; 26 (6): 543–546. doi: https://doi.org/10.1130/0091-7613(1998)026<0543:DSAOTR>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The 1 Ma Bosumtwi Crater in Ghana is an 11-km-diameter, presumably complex, well-preserved impact structure that is associated with the Ivory Coast tektite strewnfield. Detailed structural geologic studies along a complete traverse through the northwestern rim section indicated four zones characterized by distinct deformation styles from just outside of the crater rim to near the crater floor. Zone 1 is dominated by thick deposits of lithic impact breccia, intercalated in places with products of local mass wasting. Zone 2 contains inward-dipping thrust planes, conjugate radial fractures, isoclinal folding, and overturned stratigraphic sequences. Zone 3 represents a megabreccia zone, in which block size decreases upward and outward toward the rim crest. The innermost zone 4 is dominated by intense thrust faulting of multiple orientations, resulting in complex duplex- and lens-shaped bodies. These deformation styles generally correspond to those previously reported from the rims of simple bowl-shaped meteorite-impact craters and appear to be characteristic of impact structures in general. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.